Stress Response of Juvenile Beluga, Huso huso, to Light and Tank Colors

Abstract

Effects of light and tank colors on stress response of juvenile beluga sturgeon, Huso huso, was investigated by the measurement of some sero-haematological parameters and carcass chemical analysis. The analysis was based on the responses of 64 specimens (initial weight 98.83 ± 1.42 g) reared under white, red, green, or blue light, and 48 specimens reared in white, black, or blue tanks, all for 12 weeks. Blue/green light and black tanks produced positive effects on cortisol that can be related to physiological condition and stress.

Keywords:

• Light spectrum
• stress
• carcass chemical analysis
• sero-haematological indices
• sturgeon